all products got declined on merchant center since 500 error yesterday

Hello, as tittle says since the server errors from yesterday all my products got desyncred on Merchant center, how could we fix this?

To fix the desynchronization of your products in Merchant Center after the server errors, try manually resyncing your product feed from Shopify to Google Merchant Center. You can do this by going to the Google Channel in your Shopify admin, checking for any error messages, and then following the prompts to refresh your product feed to ensure everything is correctly synced again.

If this started right after Shopify 500/server errors and all products were hit together, I’d treat it as an outage/crawl-state problem first, not as a normal feed-quality problem.

Pick 3–5 affected item IDs and save the exact GMC error, first-seen time, final URL, and whether Google reported a 500/internal-server/crawl issue. Then test the same URLs now with a live Google fetch tool such as Search Console URL Inspection/Rich Results Test. If Google can fetch them now, request the Merchant Center website check/reprocessing and give it time to recrawl instead of reinstalling the Google app or bulk-editing URLs.

Only if live fetch still fails would I change robots/theme/app/firewall settings. Otherwise you risk creating a second source/URL problem after the outage has already cleared.

Request a review inside Google Merchant Center.

Here is a guide: https://www.youtube.com/watch?v=SGjgpK9Eit0